try browsing to http://local.mysite.no/console/cms/Stores/contentdata/311166_446589 to see what the internal server error is

Browsing the url gives the output below. I'm not quite sure what to make of it - I can't spot any immediate issues?

{}&&{"editablePreviewUrl":"http://local.mysite.no/console/CMS/Content/sider/sectionpage_test,,311166_446589/?epieditmode=True","isNewVersionRequired":false,"isCommonDraft":false,"isMasterVersion":false,"publishedBy":"admin","lastPublished":"2014-10-16T08:29:37.223Z","versionCreatedBy":"admin","versionCreatedTime":"2014-10-16T07:58:57.75Z","visibleToEveryOne":true,"isPendingPublish":false,"existingLanguageBranches":[{"name":"Norwegian","languageId":"no","isMasterLanguage":true,"commonDraftLink":"311166_446601","urlSegment":"no","accessMask":63}],"publicUrl":"http://local.mysite.no/sider/sectionpage_test/","downloadUrl":"","previewUrl":"http://local.mysite.no/console/CMS/Content/sider/sectionpage_test,,311166_446589/?epieditmode=False","hasTemplate":true,"accessMask":63,"accessRights":63,"name":"sectionpage_test","contentLink":"311166_446589","parentLink":"349","uri":"epi.cms.contentdata:///311166_446589","contentGuid":"04bafc3b-afd6-454e-9166-adfee14a13ef","contentTypeID":262,"contentTypeName":"Section Page","currentLanguageBranch":{"name":"Norwegian","languageId":"no","isMasterLanguage":true,"commonDraftLink":null,"urlSegment":null,"accessMask":0},"assetsFolderLink":"311167","properties":{"icontent_name":"sectionpage_test","icontent_contentlink":"311166_446589","icontent_parentlink":"349","icontent_contenttypeid":262,"icontent_isdeleted":false,"icategorizable_category":[],"iversionable_ispendingpublish":false,"iversionable_startpublish":"2014-10-16T06:04:02Z","iversionable_stoppublish":null,"iversionable_shortcut":{"pageShortcutType":0,"pageShortcutTypeName":"No shortcut","pageTargetFrame":null,"pageShortcutLink":null,"pageLinkURL":"/Templates/Pages/SectionPage.aspx?id=311166"},"iversionable_expire":{"stopPublish":null,"archiveLink":null},"ichangetrackable_created":"2014-10-16T06:04:02Z","ichangetrackable_createdby":"admin","ichangetrackable_changed":"2014-10-16T06:04:14.043Z","ichangetrackable_setchangedonpublish":false,"ichangetrackable_changedby":"admin","ichangetrackable_saved":"2014-10-16T07:58:57.75Z","ichangetrackable_deletedby":"","ichangetrackable_deleted":null,"iroutable_routesegment":"sectionpage_test","pageFolderID":0,"pageTypeName":"SectionPagePageType","pageMasterLanguageBranch":"no","pageLanguageBranch":"no","pageContentAssetsID":"69398dc7-3ad5-4580-b713-cc6779d18548","pageContentOwnerID":null,"pageVisibleInMenu":true,"pageChildOrderRule":1,"pagePeerOrder":100,"pageExternalURL":null,"pageArchiveLink":null,"pageShortcutType":0,"pageShortcutLink":null,"pageTargetFrame":null,"pageLinkURL":"/Templates/Pages/SectionPage.aspx?id=311166","mainArea":null,"extensionPageProperty":null,"presentationSeparator":null,"presentationText":null,"presentationPicture":null,"presentationPictureAlign":"RIGHT","presentationPictureWidth":100,"presentationPictureHeight":null,"presentationPictureAltText":null,"presentationLinkText":null,"metaDescription":"123","metaKeywords":"321","browserTitle":"qwe","mainContentArea":null},"inUseNotifications":[],"created":"2014-10-16T06:04:02Z","createdBy":"admin","changed":"2014-10-16T06:04:14.043Z","changedBy":"admin","deletedBy":"","deleted":null,"saved":"2014-10-16T07:58:57.75Z","isDeleted":false,"capabilities":{"deleteLanguageBranch":true,"versionable":true,"dynamicProperties":true,"isPage":true,"languageSettings":true,"resourceable":true,"language":true,"securable":true},"providerCapabilityMask":1023,"status":2,"typeIdentifier":"mysite.web.templates.types.sectionpagepagetype","ownerTypeIdentifier":null}

I found the error.

For historical reasons my site definition originally contained three host names:

• local.mysite.no:*
• local.mysite.no
• *

When EPiServer tries to save the page (the draft), the url looks like this "http://local.mysite.no:*/MyAwesomePage/", which is not a valid URI.

The Fix: delete host name in admin mode suffixed with ":*".